Permeability of water and oleic acid in composite films of phase separated polypropylene and cellulose stearate blends
Journal article, 2016
Cellulose esters with long carbon side chains (e.g. stearate) were produced via a homogenous reaction in ionic liquids. The degree of substitution was calculated to approximately 2. The melt rheology was studied for the pure cellulose esters but also combinations of the esters and polypropylene to study the processability of a blended composite material. It was shown that the compatibility between the two components was weak, which resulted in a phase-separated composite material. The morphology and permeability of water and oleic acid of the composite films were studied and it was shown that the water permeability decreased upon addition of the cellulose ester to the polymer. The permeability of oleic acid was however unchanged, which is most probable a result of high solubility in the cellulose ester rich domains of the composites. Also, the following hypothesis is stated: cellulose stearate influence the polypropylene crystallization process by decreasing the size of spherulites. (C) 2016 Elsevier Ltd. All rights reserved.
nanocomposites
Permeability
Polymer blending
Polymer Science
esters
derivatives
acylation
Cellulose stearate
Polypropylene
1-butyl-3-methylimidazolium chloride
dispersion
ionic liquids
polyethylene
Chemistry
Spherulites
Author
I. Krasnou
Tallinn University of Technology (TalTech)
Sofie Gårdebjer
Chalmers, Chemistry and Chemical Engineering, Applied Chemistry
E. Tarasova
Tallinn University of Technology (TalTech)
Anette Larsson
Chalmers, Chemistry and Chemical Engineering, Applied Chemistry
Gunnar Westman
Chalmers, Chemistry and Chemical Engineering, Chemistry and Biochemistry
A. Krumme
Tallinn University of Technology (TalTech)
Carbohydrate Polymers
0144-8617 (ISSN)
Vol. 152 450-458Subject Categories
Polymer Chemistry
Organic Chemistry
Areas of Advance
Materials Science
DOI
10.1016/j.carbpol.2016.07.016
PubMed
27516292